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Bulletin of Botanical Research ›› 2016, Vol. 36 ›› Issue (4): 588-595.

### Variance Analysis and Growth Model Building of H and DBH of Poplar Clones at Different Sites

SI Dong-Jing1, ZHANG Xin-Xin1, HAN Dong-Hui1, JIN Yun-Zhe2, DONG Yuan-Hai2, ZHAO Guang-Hao3, LENG Wei-Wei3, ZHAO Xi-Yang1

1. 1. State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, Harbin 150040;
2. Forestry Bureau of Longjing, Longjing 133400;
3. Kaishantun Forestry Farm of Longjing, Longjing 133400
• Received:2015-12-03 Online:2016-07-15 Published:2016-06-15

Abstract: Thirty poplar clones in different sites as materials and tree height(H), diameter at breath height(DBH) of different clones were investigated to calculate the variance parameters and build growth models. The result showed that there exit significant difference(P<0.01) among sites, clones and the interaction of site with clone in traits H and DBH. The coefficient variation of phenotype(PCV) of H and DBH ranged from 15.34% to 23.80% and 19.42% to 31.88%, respectively. The repeatability(R) of all the investigated traits ranged from 0.7977 to 0.9859, which indicated a high repeatability values. The degree of fitting of H and DBH models were 0.82 and 0.87, respectively, which showed a perfect imitative effect. With the help of model to estimate the data which were not measured, Guanxian showed the highest initial H and DBH values but Fengfeng and Weixian suggested the highest growth rates for H and DBH, respectively. There was obvious interaction between genotype and environment and whatever the different clones in same site or the same clone in different sites there were all exist larger difference in H and DBH, which indicated that the environment factors should be considered when excellent clones were evaluated and selected.

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